Minette is a human-shaped automata created by the skilled artisan Mise Altoise. She was discovered sleeping in a hidden tower of the cathedral in the port city of Ert'Aria after a meteor of concentrated El, the mysterious energy that permeates the world, struck the spire. The impact awakened her, and upon seeing Leicester Maycraft, an item engineer belonging to the adventurer guild Oasis, she immediately recognized him as her father, a bond she formed instinctively because he was the first person she saw. She appears to be about ten years old, with long pink hair, pink eyes, and a youthful, delicate frame. Her core is the Anima Perla, a powerful artifact that gives her life and grants her the ability to pacify and absorb the wild magic of El-infused monsters. This makes her uniquely valuable during the guild's adventures, as she can neutralize dangerous crystal creatures that others struggle against.

Minette has an innocent, caring, and openhearted personality. She is quick to trust others and makes friends easily, approaching the world with curiosity and a childlike sense of wonder. Her primary motivation is to stay close to Leicester, whom she loves and looks up to as a parent, and to explore the world alongside her new companions. She forms warm relationships with the other members of Oasis, including Carina Verritti, Agnes Boulange, and Chelsea Arcot, as well as a close friendship with a shy, frail girl named Miriam, whom she meets and regularly visits to share stories of her travels outdoors. Over the course of the story, Minette grows from a naive, newly awakened puppet into a more confident and active member of the group, using her abilities to help protect her friends and resolve crises. Her presence also deepens the emotional bonds among the guild, as Leicester and the others come to care for her and treat her as family. While she does not undergo a dramatic personality shift, her expanding understanding of the world and her desire to be useful to those she loves drive her development.